{"type":"https:\/\/mailchimp.com\/developer\/marketing\/docs\/errors\/","title":"Invalid Resource","status":400,"detail":"The resource submitted could not be validated. For field-specific details, see the 'errors' array.","instance":"454b9d36-5fa1-0519-1030-699c0103a5cf","errors":[{"field":"email_address","message":"This value should not be blank."}]}